Investments - Net Investment Gains (Losses) of Consolidated Funds (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments [Abstract]
Gains (losses) from investments of Consolidated Funds	$ (408.1)	$ 76.6	$ (29.1)
Gains (losses) from liabilities of CLOs	366.6	(74.1)	7.8
Total	$ (41.5)	$ 2.5	$ (21.3)